Sparkless explosion-proof integrated control box

Abstract

The utility model relates to the technical field of explosion-proof distribution boxes, in particular to a sparkless explosion-proof comprehensive control box, which comprises a main box body, an extrusion type sealing gasket and a cover body. According to the explosion-proof distribution box, through designing the T-shaped piece and the sliding screw rod structure, after the cover body hinge is closed, the cover body can be pulled to extrude the extrusion type sealing gasket by rotating the fastening nut, so that better sealing is realized, compared with a traditional hinge structure, the explosion-proof distribution box is good in sealing effect, a complicated sealing surface does not need to be specially designed, and the production cost of the explosion-proof distribution box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof distribution boxes, and particularly relates to a non-sparking explosion-proof integrated control box. Background Technique

[0002] An explosion-proof control box is a control electrical device that avoids explosion accidents in environments with combustible gases, liquids or dust, and is widely used in fields such as petrochemical industry and coal mining.

[0003] The cover body of the explosion-proof integrated control box generally adopts a hinge connection method. Since the hinge structure needs to complete the opening and closing actions and leaves a certain movement gap, it is very difficult to ensure the closing tightness, and often a complex sealing structure is required to achieve this, which is a challenge to the production and manufacturing of the explosion-proof distribution box. Therefore, the utility model provides a new non-sparking explosion-proof integrated control box. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a non-sparking explosion-proof integrated control box.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A non-sparking explosion-proof integrated control box, comprising:

[0007] A main box body;

[0008] An extrusion sealing gasket, the front side of the main box body shrinks inward to form a door frame body, and the extrusion sealing gasket is sleeved on the outside of the door frame body;

[0009] A cover body, a T-shaped part is hinge-connected to the first side of the cover body, a sliding screw is fixedly connected to the side surface of the T-shaped part, a connection hole is opened on the front side surface of the main box body, and the end of the sliding screw away from the T-shaped part passes through the connection hole and is threadedly connected with a fastening nut, and the second side of the cover body is fixedly installed with the main box body through screws;

[0010] The first side and the second side of the cover body are parallel to each other.

[0011] As a further description of the above technical solution:

[0012] The relay installed inside the main box body is a solid-state relay.

[0013] As a further description of the above technical solution:

[0014] A notch is opened on the side surface of the main box body, and the connection hole is located at the notch.

[0015] As a further description of the above technical solution:

[0016] A connecting ear is fixedly connected to the front side of the main box body, and the end of the screw is threadedly connected to the connecting ear.

[0017] As a further description of the above technical solution:

[0018] A protruding plate is fixedly connected to the second side of the cover body.

[0019] As a further description of the above technical solution:

[0020] An inner housing is fixedly connected to the inner side of the cover body. The thickness of the inner housing is 5 - 8 MM. An inlet hole is provided on the inner housing. A button installation space is formed between the inner housing and the cover body. A button hole communicating with the button installation space is provided on the front side of the cover body.

[0021] As a further description of the above technical solution:

[0022] A safety cabinet door installation opening communicating with the button installation space is provided on the front side of the cover body, and a safety cabinet door is fixedly installed inside the safety cabinet door installation opening.

[0023] The utility model has the following beneficial effects:

[0024] 1. Compared with the prior art, for this non-sparking explosion-proof integrated control box, by designing the T-shaped part and the sliding screw structure, after the cover body hinge is closed, the cover body can be pulled to squeeze the extrusion sealing gasket by rotating the fastening nut, achieving better sealing. Compared with the traditional hinge structure, it has a good sealing effect and does not require a specially designed complex sealing surface, reducing the production cost of the explosion-proof distribution box.

[0025] 2. Compared with the prior art, for this non-sparking explosion-proof integrated control box, by designing the inner housing with a thickness of 5 - 8 MM, when an explosion occurs inside the main box body, the inner housing deforms to effectively absorb energy and reduce the damage caused by the explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a perspective view of a non-sparking explosion-proof integrated control box proposed by the utility model;

[0027] Figure 2 is a front view of a non-sparking explosion-proof integrated control box proposed by the utility model;

[0028] Figure 3 is a side view of a non-sparking explosion-proof integrated control box proposed by the utility model;

[0029] Figure 4 is Figure 3 a partial enlarged view of part A in

[0030] Figure 5 The top view of a non-sparking explosion-proof integrated control box proposed by the present utility model;

[0031] Figure 6 The three-dimensional view of the main box body of a non-sparking explosion-proof integrated control box proposed by the present utility model;

[0032] Figure 7 The three-dimensional view of the cover body of a non-sparking explosion-proof integrated control box proposed by the present utility model.

[0033] Legend description:

[0034] 1. Main box body; 2. Door frame body; 3. Extrusion type sealing gasket; 4. Notch; 5. Connecting hole; 6. Connecting ear; 7. Cover body; 7a. Protruding plate; 8. T-shaped part; 9. Sliding screw; 10. Fastening nut; 11. Inner shell; 12. Button hole; 13. Safety cabinet door; 14. Inlet hole; 15. Screw. Specific implementation manners

[0035] Referring to Figures 1-7 The non-sparking explosion-proof integrated control box provided by the present utility model includes: a main box body 1, an extrusion type sealing gasket 3, and a cover body 7.

[0036] Among them, the front side of the main box body 1 shrinks inward to form a door frame body 2. The extrusion type sealing gasket 3 is sleeved on the outer side of the door frame body 2. The extrusion type sealing gasket 3 is of an annular structure, and the material is selected as a rubber material with high temperature resistance and corrosion resistance. A T-shaped part 8 is connected by a hinge to the first side edge of the cover body 7. A sliding screw 9 is fixedly connected to the side surface of the T-shaped part 8. A connecting hole 5 is opened on the front side surface of the main box body 1. One end of the sliding screw 9 away from the T-shaped part 8 passes through the connecting hole 5 and is threadedly connected with a fastening nut 10. The second side edge of the cover body 7 is fixedly installed with the main box body 1 through a screw 15. The first side edge and the second side edge of the cover body 7 are parallel to each other, and the screw 15 and.

[0037] After closing the cover body 7 with the hinge, first pre-tighten the screw 15, and then synchronously or repeatedly and alternately tighten the screw 15 and the fastening nut 10, so that the cover body 7 squeezes the extrusion type sealing gasket 3, and a stable sealing structure is formed between the cover body 7 and the door frame body 2 of the main box body 1.

[0038] When the cover body 7 is opened, the fastening nut 10 also needs to be loosened a little, and then the screw 15 is removed, and then the cover body 7 is opened.

[0039] In an embodiment, the relay installed inside the main box body 1 is a solid state relay. Compared with a common relay, when the solid state relay works, it does not generate sparks and can better cooperate with the explosion-proof integrated control box.

[0040] In one embodiment, a notch 4 is formed on the side surface of the main box body 1, and the connecting hole 5 is located at the notch 4, so as to facilitate the use of a wrench to screw the fastening nut 10.

[0041] In one embodiment, a connecting ear 6 is fixedly connected to the front side surface of the main box body 1. A threaded hole is formed in the connecting ear 6, and the end of the screw 15 is threadedly connected to the connecting ear 6.

[0042] In one embodiment, a protruding plate 7a is fixedly connected to the second side of the cover body 7. The part of the protruding plate 7a extending beyond the main box body 1 serves as a handle, facilitating the user to open the cover body 7.

[0043] In one embodiment, an inner shell 11 is fixedly connected to the inner side of the cover body 7. The thickness of the inner shell 11 is 5 - 8 mm. The thickness of the inner shell 11 is less than the thicknesses of the cover body 7 and the main box body 1. An inlet hole 14 is formed in the inner shell 11. The control wire passes through the inlet hole 14 and enters the interior of the inner shell 11. A button installation space is formed between the inner shell 11 and the cover body 7. A button hole 12 communicating with the button installation space is formed on the front side surface of the cover body 7. A control button is installed at the button hole 12.

[0044] In one embodiment, a safety cabinet door installation opening communicating with the button installation space is formed on the front side surface of the cover body 7, and a safety cabinet door 13 is fixedly installed inside the safety cabinet door installation opening. The safety cabinet door 13 does not need to be frequently disassembled and can adopt a stable installation method. For example, the safety cabinet door 13 can be fixed by welding or a bolt group.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spark-free explosion-proof integrated control box, comprising: Main box (1); It is characterized by further comprising: An extrusion type sealing gasket (3), wherein the front side surface of the main box body (1) is contracted inwardly to form a door frame body (2), and the extrusion type sealing gasket (3) is sleeved on the outer side of the door frame body (2); A cover body (7), wherein a first side edge of the cover body (7) is hingedly connected to a T-shaped piece (8), a side edge of the T-shaped piece (8) is fixedly connected to a sliding screw (9), a front side edge of the main box body (1) is provided with a connecting hole (5), an end of the sliding screw (9) away from the T-shaped piece (8) passes through the connecting hole (5) and is threadedly connected to a fastening nut (10), and a second side edge of the cover body (7) is fixedly mounted to the main box body (1) by means of screws (15); The first side edge and the second side edge of the cover body (7) are parallel to each other.

2. A spark-free explosion-proof integrated control box according to claim 1, characterized in that: The relay installed inside the main box (1) is a solid-state relay.

3. The spark-free explosion-proof integrated control box according to claim 1 is characterized in that: A notch (4) is provided on the side of the main box body (1), and the connection hole (5) is located at the notch (4).

4. The spark-free explosion-proof integrated control box according to claim 1 is characterized in that: A connecting ear (6) is fixedly connected to the front side of the main box body (1), and the end of the screw (15) is threadedly connected to the connecting ear (6).

5. The spark-free explosion-proof integrated control box according to claim 1 is characterized in that: A protruding plate (7a) is fixedly connected to the second side edge of the cover body (7).

6. The spark-free explosion-proof integrated control box according to claim 1 is characterized in that: The inner side of the cover body (7) is fixedly connected to an inner shell body (11), the thickness of the inner shell body (11) is 5-8 mm, a wire entry hole (14) is provided on the inner shell body (11), a button installation space is formed between the inner shell body (11) and the cover body (7), and a button hole (12) communicating with the button installation space is provided on the front side of the cover body (7).

7. The spark-free explosion-proof integrated control box according to claim 6 is characterized in that: The front side surface of the cover body (7) is provided with a safety cabinet door installation opening which is in communication with the button installation space, and a safety cabinet door (13) is fixedly installed on the inner side of the safety cabinet door installation opening.

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